Method of manufacturing roofing material.



S. M. FORD.

METHOD OF MANUFACTURING ROOFING MATERIAL- APPLICATION FILED JUNE 12, I916.

Patented Apr. 16, 1918.

2 SHEETS-SHEET l.

s. M. FORD. METHOD OF MANUFACTURING ROOFING MATERIAL.

APPLICATION FILED JUNE 12, 916.

Patented Apr. 16, 1918.

2 swans-su ar 2.

SILAS M. FORD, OF ST. PAUL, MINNESOTA.

METHOD OF MANUFACTURING ROOFING MATERIAL.

Specification of Letters Patent.

Patented Apr. 16, 1918..

Application filed .Tune 12, 1916. Serial No. 103,265.

To all whom it may concern:

Be it known that I, SILAS M. FORD, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and.

Another object of my invention is to provide means whereby both surfaces of the sheet of roofing may be covered with a mineral surfacing, except certain strips, which are left free of the mineral surfacing.

Another object of my invention is to provide protecting means that will prevent the mineral surfacing applied to the sheet as a whole from comin in contact wi h certain strips of the material, and furthermore provide means for treating the protecting means so that thecompound ordinarily used on such roofing material will not adhere thereto.

Another object of my invention is to provide automatic means, whereby a protecting belt will follow the sheet of roofing tobe treated, a, considerable distance before or after the mineral surfacing has been applied to the sheet, so that the coating on the sheet will be set, and the surfacin set in the coating before the protecting be t leaves the sheet. 7

Another object of my invention is to provide means for brushing or blowing, or otherwise cleaning off the surplus mineral surfacing before the belt is removed from the sheet.

With these and incidental objects in view the invention consists of certain. novel features of construction and combination of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany and form a part;

of this specification.

Figure 1 is a plan view of one embodiment of my invention, and Fig. 2 is a side elevation of the same. Fig. 3 is a perspective V w of the machine shown in Figs.- 1 and 2, to better illustrate the position of the belts with regard to the sheet of material.

Rolls of roofing paper, or other suitable material, preferably water-proofed, such as 1, is led by a series of roller '2 through a bath of weather-proofing material, preferably heated, in' the tank 3 and passes out through the squeeze rollers 4 over the scraper 20, which removes the surplus coating from the bottom of the sheet, but leaves it the desired thickness on the top of the sheet.

The sheet 1 now passes from the first element A? of the machine to the second element B. In the element B is a pair of endless belts '5, preferably steel, which pass around the rollers 6, and thus in and out of the tank 7 which contains oil, melted parafiin, or possibly'only water, the idea being merely to coat the belts at this point, so that they will not adhere readily to the coating applied to the top of the sheet by the element B. l

Instead of coating the belt by passing it through the tank 7, I may deposit on the surface thereof from the hopper 10, talc powder or something of that nature, or I may use both means for preventing the belt from sticking. I may also use blowers 23 for blowing talc powder or the like under that portion of the sheet just about to be covered by the belt.

At the pair of rollers 8, the belts 5 join the sheet 1, but these rollers are preferably not run tightly'together so that the belt is not embedded in the ground, but merely travels along with the sheet.

A-hopper 9 is' provided, whereby a surfacing of slate or any desired kind of grit may be readily applied to the sheet and the I belts, which are now associated with the sheet. A series of cooling rollers 11 are provided to cool the material. A brush 12 removes the surplus. material, which is further removed by ablower13.

. Leaving the rollers 14, the belts 5 travel upwardly over the roller 15 back to rollers 6; v

A sifter 16 is provided to deposit tale powder, or anything of a similar nature on that v I portion of the sheet where the belt has been traveling, so that in case any particles of grit should work on to this surface later, they will not adhere thereto.

The sheet 1 then passes through slitters 17, which cut the sheet into material of such a Width that this width will form the length of shingles to be out there from, or will be the corresponding width of shingle strips.

An element C is provided to treat the under side of the sheet in the same manner as already described for the top of the sheet. In this element a pair of belts '5, similar to belts 5, pass from. roller 6 over the roller 18' under the hopper 10 around the roller 19 up to the lower roller8, where it joins the sheet.

Passing along with the sheet, the belts turn on the roller 21, so as to bring the under side of the sheet and belt above. The hopper 9 then deposits grit on the under side of the sheet similarly as the hopper 9 deposits the grit on the upper side of the sheet. The belt then passes on over the turning rollers 22 down to the cooling rOllers 11, over brush 12 and the bloWer 13,

which clean the lower ide of the sheet, as the brush and blower l2 and 13 clean the upper side.

Passing overthe l owerroller 14, the lower pair of belts now leave the sheet and pass downwardly over the roller 15 back to the rollers 6.

A blower 16 is provided to dust the lower side of the sheet with talc powder, as the sifter 16 dusts the upper side of the sheet.

It'is evident that either element B or C may be used independently of each other, or they may both be used on the roofing material as desired.

Also it is evident that the scraper 20 may be omitted when the element 0 is used, and that the weather-proofing coating may be applied in other manner than by running the sheet through the tank 3.

While I have described my invention and illustrated it in one particular design, I do not wish it understood that I limit myself to this construction, as the application of my invention may be varied in many ways within the scope of the following claims.

Claims:

1.- The method of manufacture roofing material comprising the coating of suitable material with a water-proof compound, treating an endless traveling means so that it will not stick to the compound, leading the endless traveling means to thesheet and carrying it with the sheet, depositing on the sheet and traveling means a grit, cooling the traveling means and sheet and leading the endless traveling means from the sheet.

2. The method of manufacturing prepared. roofing comprising the surfacing of suitable material with a water-proofing compound,

passing an endless traveling means through abath of such natureas to prevent its sticking to the water-proofing compound, leading the endless traveling means to the sheet and running it along with the sheet, depositing on the sheet a surfacing of grit, pressing the grit so deposited into the compound, run ning the traveling means and sheet over cooling rollers, removing the surplus grit and leading the endless traveling means from the sheet, slitting the sheet into trips of shingle length, leaving an upper portion of the shingle strip free from all grit, and the lower portion covered with grit.

3. The method of manufacturing prepared roofing comprising the surfacing of a sheet of suitable material with a water-proofing compound, joining an endless traveling mean to the sheet, running it with the sheet,-

depositing on the sheet a surfacing of rit, running the sheet and endless trave ing means over cooling rollers, brushing and blowing the surplus material from the sheet and traveling means, leading the endless rollers, removing the surplus grit, leading,

the traveling means from the sheet and slitting the sheet into strips of shingle length, so as to leave a portion of each strip where the traveling means have been traveling free of grit.

' 5. The method of manufacturing roofing material comprising the coating of a sheet 'of suitable material with a water-proofing compound, treating an upper and a lower endless traveling means, so that they will not stick to the compound, leading the travelin means to the sheet, one on the bottom and one on the top thereof, applying a surfacing of grit to both top and bottom of said sheet and the traveling means thereon, leading the sheet with top and bottom traveling means over a series of cooling rollers, removing the surplus grit from the top and bottom thereof, and leading the top and bottom traveling means from the sheet.

6. The method of manufacturing roofing material comprising the coating of a sheet of suitable material with a water-proofing com ound, treating an upper and a lower end ess traveling means, so that they will not stick to the compound, leading the travcling means to the sheet, one on the bottom and One on the top thereof,.applying a surfacing of grit to both top and bottom of said sheet and the traveling means thereon, leading the sheet with top and bottom traveling means over a series of cooling rollers, removing the surplus grit from the top and bottom thereof, leading the top and bottomtraveling means from the sheet, and slitting the sheet into strips, a portion of each strip being free from grit.

7. The method of manufacturing roofing material comprising the coating of the top and bottom of a sheet of suitable material with a water-proofing compound, preparing a series of upper and lower endless traveling means, so that they will not stick to the compound, leading the endless traveling means to the sheet and carrying them forward therewith, depositing on the upper and lower side of the sheet and the traveling means thereon a surfacing of grit, cooling the combined sheet and traveling means, re-

movingv the surplus grit from the topand bottom of the sheet and traveling means, and leading the upper and lower traveling means from the sheet, depositing a. tale powder or' the like on the strips on the upper and lower side of the sheet previously covered with the endless traveling means.

8. The method of manufacturing. roofing material comprisin the coatin of the top and bottom of a s eet of suita le material with a water-proofing compound, preparing a series of upper and lower endless traveling bottom oft-the sheet and traveling means,

leading the upper and lower traveling mean from the sheet, depositing a tale powder or the like on the strips on the upper and lower side of the sheet previously covered with the endless traveling means, and slitting file sheets in that portion thereof that is free of grit.

SILAS M. FORD. 

